Electric Forklift Battery Maintenance Methods

Check before charging: Ensure that the forklift battery is intact, the wiring is in good condition, and open the gas vent cap.
Do not open or remove the electrolyte fill plug on the battery.
Do not add liquid before or during charging.
Smoking, creating sparks, or open flames are strictly prohibited near the battery.
Do not discharge the battery while charging.
Do not place metal tools on the battery while charging.
Do not repair the battery while charging.
The electrolyte temperature should not exceed 55°C during charging.
For new forklift batteries: Prepare electrolyte with a specific gravity of 1.26, cool it to 30°C, and fill the battery. The liquid should be added to a level that is 10-20 mm above the protection plate. Wait for 6 hours and ensure the temperature of the liquid drops below 35°C before starting to charge. The specific gravity of the electrolyte mentioned refers to 30°C. For other temperatures, convert according to the following formula: D30°C = Dt + 0.007(t – 30°C).

During charging: The electrolyte temperature should not exceed 55°C. If it does, reduce the charging current, artificially cool down, or suspend charging.

When the battery reaches saturation: The voltage and specific gravity of the electrolyte should remain stable within 2-3 hours, with a large amount of gas bubbles emerging. The specific gravity of the electrolyte should reach 1.26, and the individual cell voltage should reach 2.4V.

When the individual cell voltage drops to 1.7V and the voltage meter shows 41V (under load), and the specific gravity drops to 1.18, charging should be done promptly.

At the end of charging: Use distilled water or a diluted solution with a specific gravity of 1.4 to adjust the electrolyte specific gravity to 1.26, and maintain sufficient liquid height. Record the voltage and electrolyte specific gravity during the start and end of charging. These records are helpful for battery maintenance and analysis.

Do not place the battery near fire or heat sources. After charging, close the gas cap, clean any electrolyte spills, keep the terminals clean and dry, and apply petroleum jelly. The battery wash must be done outside of the vehicle.

Charging environment: The battery charging area must be well-ventilated. Strong forced ventilation is required around the vehicle when charging. The ventilation system in the charging area must be efficient, and the temperature should not exceed 40°C. Airflow volume can be calculated to avoid the accumulation of hydrogen-oxygen mixture that could cause an explosion. Use the following formula to calculate: Q = 0.05 × I × N (where Q is the airflow volume, I is the charging current at the end of charging, and N is the number of battery units). Ensure the airflow in the charging area exceeds the calculated airflow volume.